Jean-Louis Michel--who among other things served Napolean--is reputed to have won many matches and even deadly duels with a foil over heavier weapons. I have read accounts of his killing/wounding something over a dozen experts and masters from Italy over a regimental honor spat. He was very small and very fast and from what I can gather from accounts wasn't beyond tiring out his opponent by repeated near-closures-then escapes until the opponent with the heavier weapon tired.
As for the original question I blotted out: There is no one answer. Who got the drop? Were both people drawn and set beforehand? How much space is there and what is the topography? Do the rules of combat allow body contact as part of the equation or would any even victory be ruined if such methods were used used? What armor/protection is allowed?
The side condition ONE-ON-ONE is important as well as the longer combat extends in any group combat, the more the advantage switches to those wielding lighter, faster weapons so long as they are actually effective.
SharkHunter wrote:...
In "romanized" Japanese it's "samurai", pronounced sah-moo-aye.
As to who'd win, I don't know and lack the skill to discuss it effectively, though I think the heavier sword wins every time.
That's based on my question as to whether any foil could block a "first swing" power stroke against a heavier sword without breaking -- we broke high grade steel epee(s) in our fancing classes with unfortunate frequency. I think that the foil(s)/epee(s) were "gentlemnans swords", and the heavier weapons "soldier's weapons" because I've never seen anything but a bladed sword used in any formal military drills like the Marines, etc., and that's a heritage thing.